Casing and liner drilling shoes with portions configured to fail responsive to pressure, and related methods

Abstract

A casing bit, which may comprise a composite structure, for drilling a casing section into a subterranean formation, and which may include a portion configured to be drilled therethrough. Cutting elements and methods of use may be included. Adhesive, solder, electrically disbonding material, and braze affixation of a cutting element may be included. Differing abrasive material amount, characteristics, and size of cutting elements may be included. Telescoping casing sections and bits may be included. Embodiments may include: at least one gage section extending from the nose portion, at least one rotationally trailing groove formed in at least one of the plurality of blades, a movable blade, a leading face comprising superabrasive material, at least one of a drilling fluid nozzle and a sleeve, grooves for preferential failure, at least one rolling cone affixed to the nose portion, at least one sensor, discrete cutting element retention structures, and percussion inserts.

1. A casing shoe configured for attachment to a section of casing and for drilling or reaming a wellbore as the section of casing is advanced into the wellbore, the casing shoe comprising: a nose portion having an inner profile and an outer profile; at least one cutting structure on the outer profile of the nose portion, the at least one cutting structure configured for removing formation material; and at least one aperture formed in the nose portion and configured for delivering fluid from an interior of the casing shoe to an exterior thereof; and at least one pressure retaining wall portion of the casing shoe configured to break in response to fluid pressure acting on an interior surface thereof and without mechanical wall impact. 
     
     
       2. The casing shoe of  claim 1 , wherein the at least one portion of the casing shoe comprises a frangible region of the casing shoe. 
     
     
       3. The casing shoe of  claim 1 , wherein the at least a portion of the casing shoe is configured to fail without damaging the at least one cutting structure in response to fluid pressure in the interior of the casing shoe due to obstruction of the at least one aperture formed in the nose portion and configured for delivering fluid from an interior of the casing shoe to an exterior thereof. 
     
     
       4. The casing shoe of  claim 1 , further comprising an integral stem section extending longitudinally from the nose portion. 
     
     
       5. The casing shoe of  claim 4 , wherein the integral stem section comprises at least one device selected from the group consisting of a float valve mechanism, a cementing stage tool, a float collar mechanism, and a landing collar structure. 
     
     
       6. The casing shoe of  claim 1 , wherein the at least one portion of the casing shoe configured to fail is sized and configured to transmit cement therethrough. 
     
     
       7. The casing shoe of  claim 1 , further comprising a plurality of blades. 
     
     
       8. The casing shoe of  claim 7 , wherein the at least one cutting structure comprises a plurality of cutting elements mounted on the plurality of blades. 
     
     
       9. A casing shoe configured for attachment to a section of casing and for drilling or reaming a wellbore as the section of casing is advanced into the wellbore, the casing shoe comprising:
 a nose portion having an inner profile and an outer profile; 
 at least one cutting structure on the outer profile of the nose portion, the at least one cutting structure configured for removing formation material; and 
 at least one aperture formed in the nose portion and configured for delivering fluid from an interior of the casing shoe to an exterior thereof; and at least one portion of the casing shoe configured to fail in response to pressure acting on an interior surface thereof; 
 wherein the at least one portion of the casing shoe comprises a perforable region of the casing shoe. 
 
     
     
       10. A casing shoe configured for attachment to a section of casing and for drilling or reaming a wellbore as the section of casing is advanced into the wellbore, the casing shoe comprising: a nose portion having an inner profile and an outer profile; at least one cutting structure on the outer profile of the nose portion, the at least one cutting structure configured for removing formation material; and at least one aperture formed in the nose portion and configured for delivering fluid from an interior of the casing shoe to an exterior thereof; and at least one pressure retaining wall portion of the casing shoe configured to break in response to fluid pressure acting on an interior surface thereof and without mechanical wall impact;
 an integral stem section extending longitudinally from the nose portion; 
 
       wherein the at least one portion of the casing shoe configured to fail in response to fluid pressure acting on an interior surface thereof is located on the integral stem section. 
     
     
       11. A casing shoe configured for attachment to a section of casing and for drilling or reaming a wellbore as the section of casing is advanced into the wellbore, the casing shoe comprising: a nose portion having an inner profile and an outer profile; at least one cutting structure on the outer profile of the nose portion, the at least one cutting structure configured for removing formation material; and at least one aperture formed in the nose portion and configured for delivering fluid from an interior of the casing shoe to an exterior thereof; and at least one portion of the casing shoe configured to fail in response to pressure acting on an interior surface thereof;
 wherein the at least one portion of the casing shoe configured to fail is located on a lateral side of the casing shoe. 
 
     
     
       12. A method of installing a section of casing within a wellbore, comprising:
 advancing at least one section of casing into the wellbore with a casing shoe attached thereto; 
 drilling or reaming the wellbore using at least one cutting structure on the casing shoe as the at least one section of casing is advanced into the wellbore; 
 flowing fluid through at least one aperture extending through a nose portion of the casing shoe; 
 increasing a pressure within the casing shoe; and 
 causing at least one pressure retaining wall portion of the casing shoe to break responsive to the increased fluid pressure within the casing shoe and without mechanical wall impact. 
 
     
     
       13. The method of  claim 12 , wherein causing at least one portion of the casing shoe to fail without damaging the at least one cutting structure responsive to the increased fluid pressure within the casing shoe comprises obstructing the at least one aperture extending through the nose portion of the casing shoe. 
     
     
       14. The method of  claim 13 , wherein obstructing the at least one aperture extending through the nose portion of the casing shoe comprises dropping at least one obstruction element into the at least one section of casing. 
     
     
       15. The method of  claim 12 , wherein causing at least one portion of the casing shoe to fail without damaging the at least one cutting structure responsive to the increased fluid pressure within the casing shoe comprises breaking at least one frangible region of the casing shoe. 
     
     
       16. The method of  claim 12 , further comprising selecting the casing shoe to comprise an integral stem section. 
     
     
       17. The method of  claim 16 , further comprising providing at least one device selected from a group consisting of a float valve mechanism, a cementing stage tool, a float collar mechanism, and a landing collar structure in the integral stem section. 
     
     
       18. A method of installing a section of casing within a wellbore, comprising:
 advancing at least one section of casing into the wellbore with a casing shoe attached thereto; 
 drilling or reaming the wellbore using at least one cutting structure on the casing shoe as the at least one section of casing is advanced into the wellbore; 
 flowing fluid through at least one aperture extending through a nose portion of the casing shoe; increasing a pressure within the casing shoe; 
 increasing a pressure within the casing shoe comprising increasing the flow of fluid through the at least one aperture extending through the nose portion of the casing shoe; and 
 causing at least one portion of the casing shoe to fail responsive to the increased pressure within the casing shoe. 
 
     
     
       19. A method of installing a section of casing within a wellbore, comprising: advancing at least one section of casing into the wellbore with a casing shoe attached thereto; drilling or reaming the wellbore using at least one cutting structure on the casing shoe as the at least one section of casing is advanced into the wellbore; flowing fluid through at least one aperture extending through a nose portion of the casing shoe;
 tailoring a viscosity of the fluid and increasing a fluid pressure within the casing shoe; and 
 causing at least one portion of the casing shoe to fail without damaging the at least one cutting structure responsive to the increased fluid pressure within the casing shoe. 
 
     
     
       20. A method of installing a section of casing within a wellbore, comprising:
 advancing at least one section of casing into the wellbore with a casing shoe attached thereto; 
 drilling or reaming the wellbore using at least one cutting structure on the casing shoe as the at least one section of casing is advanced into the wellbore; 
 flowing fluid through at least one aperture extending through a nose portion of the casing shoe; increasing a pressure within the casing shoe; and 
 perforating at least one perforable region of the casing shoe responsive to the increased fluid pressure within the casing shoe. 
 
     
     
       21. A method of installing a section of casing within a wellbore, comprising:
 advancing at least one section of casing into the wellbore with a casing shoe attached thereto; 
 drilling or reaming the wellbore using at least one cutting structure on the casing shoe as the at least one section of casing is advanced into the wellbore; 
 flowing fluid through at least one aperture extending through a nose portion of the casing shoe; 
 increasing a pressure within the casing shoe; and 
 causing at least one portion of the casing shoe to fail responsive to the increased pressure within the casing shoe; and 
 flowing cement through the at least a portion of the casing shoe after causing the at least a portion of the casing shoe to fail without damaging the at least one cutting structure responsive to the increased fluid pressure within the casing shoe.